Chaetothyrina Theiss., Annls

Singtripop, Chonticha, Hongsanan, Sinang, Li, Junfu, Silva, Nimali Indeewari De, Phillips, Alan J. L., Jones, E. B. Gareth, Bahkali, Ali H. & Hyde, Kevin D., 2016, Chaetothyrina mangiferae sp. nov., a new species of Chaetothyrina, Phytotaxa 255 (1), pp. 21-33 : 25

Chaetothyrina Theiss., Annls mycol. 11(6): 495 (1913)

Epiphytic on stems, leaves or fruit surfaces, as very small, black, shiny dots, with long setae. Sexual morph: Thyriothecium superficial, easily removed from host, circular, brown to dark brown, rounded and darkened at the margin, base poorly developed, with long setae, lacking superficial mycelium. Setae straight, rounded at the apex, unbranched, with dark septa, brown to dark brown. Upper wall comprising brown to dark brown cells of textura epidermoidea. Hamathecium comprising septate, hyaline, pseudoparaphyses. Asci 8-spored, bitunicate, broadly obovoid to pyriform, apically rounded, with an ocular chamber, smooth-walled. Ascospores 2–3- seriate, broadly ellipsoidal to fusoid, 1-septate, slightly constricted at the septum, hyaline, smooth-walled, upper cell mostly larger than lower cell, base with rounded ends.

Type species:— Chaetothyrina musarum (Speg.) Theiss.

Notes:— Chaetothyrina was introduced by Theissen (1913) as a monotypic genus and typified by Chaetothyrina musarum . (Speg.) Theiss. Müller & von Arx (1962) provided an illustrated account. The genus is characterized by ascomata with setae, lack of superficial hyphae and hyaline, 1-septate ascospores ( Reynolds & Gilbert 2005, Hyde et al. 2013).